When a user changes the "preferred_language" field on their profile, the session language is normally updated to the new value so subsequent loaded pages display in the new language. However, if the "System" choice is selected, the session language does not refresh.

For example, you have English and Japanese languages installed on your system and the instance default language is English. If a user changes the 'preferred_language' field in their profile from "System [English]" to "Japanese," all subsequent pages are shown in Japanese. However, if they change the field back to "System [English]," all subsequent pages continue to be shown in Japanese until they log off and log back on. Note that this issue does not occur if you actually choose the "English" language. It only happens if you choose "System [English]".

The 'Change Own Profile' business rule on the 'User [sys_user]' table detects if a user is changing their own profile and if certain fields are changed. One of the fields included in this check is the "preferred_language" field. This business rule is not operating as intended when the "System" option is selected.

1. Navigate to System Definition > Plugins.
2. Activate the com.glide.i18n and com.snc.i18n.japanese plugins
3. Click the user menu and select Impersonate User.
4. Search for and select the ITIL User account.
5. Click the user menu and select Profile.
6. In Language, select Japanese.
   You may need to add the Language field to the form.
7. Right-click on the form header and select Save.
   Note that when the page reloads, the entire form is displayed in Japanese.
8. In Language, select System (英語).
   Note that 英語 = English.
9. Right-click on the form header and select Save.
   Note that the page reloads and is still displayed in Japanese. Because you selected System and the system language is English, the page should reload and be displayed in English. Changing your profile's Language field should update the session language.

This is by design, when the "System" choice is selected, the preferred_language field gets emptied, affecting the 'Change Own Profile' Business Rule.

There are two workarounds available for this issue:

• Log out of the instance and then log in again. Your new session obtains the correct language based on your new selection.
• In the 'Change Own Profile' business rule on the User [sys_user] table, modify line 19 from:
  
  gs.getSession().setLanguage(current.preferred_language);
  
  to:
  
  gs.getSession().setLanguage((current.preferred_language == '' ? gs.getProperty('glide.sys.language') : current.preferred_language));